diff --git a/src/akonadi/akonaditaskqueries.cpp b/src/akonadi/akonaditaskqueries.cpp
--- a/src/akonadi/akonaditaskqueries.cpp
+++ b/src/akonadi/akonaditaskqueries.cpp
@@ -73,8 +73,8 @@
     Akonadi::Item item = m_serializer->createItemFromTask(task);
     auto &query = m_findChildren[item.id()];
     auto fetch = m_helpers->fetchSiblings(item);
-    auto predicate = [this, task] (const Akonadi::Item &item) {
-        return m_serializer->isTaskChild(task, item);
+    auto predicate = [this, task] (const Akonadi::Item &childItem) {
+        return m_serializer->isTaskChild(task, childItem);
     };
     m_integrator->bind("TaskQueries::findChildren", query, fetch, predicate);
     return query->result();
diff --git a/src/domain/livequery.h b/src/domain/livequery.h
--- a/src/domain/livequery.h
+++ b/src/domain/livequery.h
@@ -81,26 +81,9 @@
     typedef std::function<void(const InputType &, OutputType &)> UpdateFunction;
     typedef std::function<bool(const InputType &, const OutputType &)> RepresentsFunction;
 
-    LiveQuery()
-    {
-    }
-
-    LiveQuery(const LiveQuery &other)
-        : m_fetch(other.m_fetch),
-          m_predicate(other.m_predicate),
-          m_convert(other.m_convert),
-          m_update(other.m_update),
-          m_represents(other.m_represents),
-          m_provider(other.m_provider)
-    {
-    }
-
-    LiveQuery &operator=(const LiveQuery &other)
-    {
-        LiveQuery tmp(other);
-        std::swap(*this, other);
-        return *this;
-    }
+    LiveQuery() = default;
+    LiveQuery(const LiveQuery &other) = default;
+    LiveQuery &operator=(const LiveQuery &other) = default;
 
     ~LiveQuery()
     {